ZPW-2000A轨道电路中补偿电容故障问题研究

Research on Compensation Capacitor Fault in ZPW-2000A Track Circuit

补偿电容故障问题是ZPW-2000A轨道电路中关键问题之一。在构建补偿电容及钢轨传输模型的基础上,主要研究补偿电容开路故障对ZPW-2000A轨道电路钢轨发送端输入阻抗及电气参数的影响规律。研究发现靠近钢轨接收端补偿电容故障对钢轨发送端输入阻抗及电气参数影响较大,在此基础上进一步研究某一特定位置补偿电容值对钢轨发送端电气参数的影响,发现随着该补偿电容值的降低,钢轨发送端输入阻抗和电压均出现降低的规律。

The compensation capacitor fault is key problem in the ZPW-2000A track circuit.This paper mainly studies the infl uence of the compensation capacitor fault on the impedance and electric parameters at the transmitting port based on building compensation capacitor and rail model.The result shows that the compensation capacitor at the receiving port signifi cantly aff ects the input impedance and electric parameters at the transmitting port of rail.On this basis,the infl uence of compensation capacitance value at a specifi c position on the electric parameters at the transmitting port is further studied.It is found that with the decrease of compensation capacitance value,the input impedance and voltage at the transmitting port decrease.